Rip-saw.



PATE'NTED MAR. 31, 1908. G. J. SCHALLER & V. B. ADAMS.

RIP SAW. APPLICATION FILED JULY 13. 1907.

UNITED STATES PATENT OFFICE.

GEORGE .T. SGHALLER, OF COVINGTON, KENTUCKY, AND VICTOR B. ADAMS,OF'CINGINNATI, OHIO.

RIP-SAW.

Specification of Letters Patent.

Patented March 81, 1908.

Application filed July 13, 1907. Serial No. 383,697.

To all whom it may concern:

Be it known that we, GEORGE J. SCHALLER and VICTOR B. ADAMs, citizens ofthe United States, and residents, respectively, of Govington, Kentoncounty, State of Kentucky, and Cincinnati, Hamilton county, and State ofOhio, have invented certain new and useful Improvements in Rip-Saws, ofwhich the following is a specification.

This invention relates to improvements in rip-saws and, moreparticularly speaking, to circular rip-saws having a shooting-board onwhich the lumber to be trimmed or cut lengthwise is placed. and carriedto the saw, and one object of the invention is to provide in connectionwith the fore end of the shooting-board of a circular rip-saw a pivotalgravitating dog or hook, the latter adapted to operate automatically toand from engaging contact with the end of the stuff that is beingcarried to and from the saw in the ripping operation. i

A further object of the invention is to provide in connection with ashooting-board, having its forward edge or corner, onthe saw side,suitably recessed or shouldered, a boxing or casing in the recess and apivotal dog mounted in said casing with its hooked end or tusk disposedupwardly and adapted to automatically contact with and release from theend of the lumber being acted upon by the ripsaw in the machine of whichthe shooting-board forms a part.

In the accom anying sheet of drawings, which serve to illustrate theinvention, Flgure 1 is a fragmentary longitudinal elevation of arip-saw, showing our invention therein, the shooting-board being inposition. just ahead of the saw and ready for a cutting stroke on stuffplaced on said shootingboard; Fig. 2, a fragmentary plan view of Fig. 1;Fig. 3, a longitudinal sectional elevation taken on the line 1:, as, ofFig. 2, but with the shooting-board advanced up to the releasingposition of the gravitating dog or hook and with the lumber or stuff onthe shootingboard sawed almost its full length; Fig. 4, a view similarto Fig. 3, and on the same sectional line, but showing the dog in its released position and the stuff or lumber freed from said dog and in theposition it occupies after having just passed through the saw; Fig. 5, afragmentary sectional elevation of the table and the fore end of theshootingboard, showing the gravitating dog in its lowered or drop edosition, the casing for said dog and, ailso, t c said dog in dottedlinesin its uppermost operating position, but with no stuff or lumber showntherein; and Fig 6, a transverse section, taken on the line y, y, ofFig. 5, of the table, shooting-board, dog and the casing for the dog.

In said drawings, 1 indicates the bench or table, 2 a circular-sawsuitably journaled or mounted therein, 3 the customary longitudinal gageadjustably mounted on the table adjacent said saw, 4 a longitudinal slotmade in the table a suitable distance forward of said saw, and 5 ashooting-board suitably mounted upon and reciprocated or drawn to andfro over said table in parallel relation to the face of said saw. Thusfar the rip-saw machine is made as customary, except in the singleprovision of the slot 4, the purpose of which we Will presentlydescribe. That part of the table over which the shooting-board passes toand fro or reciprocates, is made slatted and a tongue 6 is provided onthe bottom of the shootingboard, as best shown in Fig. 6, such tongueengaging the space between two of the slats of the table to properlyguide the shooting-board in a straight line parallel to the saw. Tostill further preserve the parallelism of the shooting-board, ascustomary, the slatted portion of the table is made at a lower levelthan the solid portion of the table, such slatted portion beingindicated at a and the solid portion at b, in Fig. 2 and, also, sodesignated in the remaining figures of the drawing. 1* The slattedportion of the table forms the usual race-way for the shootingboard onthe table or bench of the machine.

The fore inner corner of the shootingboard is recessed or shouldered at7 and a hollow metal casing or boX 8 is made to fit and coincide withsaid recess 7, screws 9 being used to secure said casing to theshootingboard. The boX or casing 8 is best shown in Figs. 5 and 6, andit has an open bottom and, also, an opening 10 in its fore edge. e

11 indicates a dog or claw pivotally mounted on a transverse screw 12 atits rear end in the box or casin 8 and with its outer end or tusk 13dispose upwardly and adapted to move in a short are 1n and above theopening 10 in said casing 8. This dog forms a claw or tuskifor use inholdin the lumber or stuff at its fore end on the shooting-board Whensaid lumber is to be carried to and from the l movement of said dog toactive detent or 5 saw in the ripping operation.

In the operation of our device, the shooting-board, with the dog restingon the surface of the table and the claw or hook end 13 above the planeof the shooting-board and the fore end of the stuff or. timber 14 incontact with said tusk, is arranged on the slatted portion of the tablejust ahead of the saw ready for a forward sliding movement by the handof the o erator. The shooting-board having been slic forward up to theposition shown in Fig. 3, wherein its fore edge and the entire dog restor he above the slot 4, the stuff 14 is retracted very slightly andsufficient only to permit the dog to gravitate into the position seen inFig. 4, the tusk of said dog dropping just below the plane of theshooting-board so that the stuff 14 can then pass and be continued onforward through the saw and passing freely over said tusk. The conditionof the stuff or timber 14 seen in Fig. 2 is its ordinary initial one, inwhich it has a ragged or rough edge 14 that is first ripped off by thesaw in the usual manner, but with the fore end of the stuff in contactwith the raised tusk 13 to prevent it from slipping lengthwise on theshooting-board in the forward movement of the latter that carries itthrough the saw.

It will be seen that the dog is automatically released from the fore endof the stuff 14 when the shooting-board has advanced sufiicient to bringsaid dog over the slot 4 and said dog is automatically forced or broughtupward with its tusk above the plane of the shooting-board, when thelatter is drawn backward along its race-way on the table 1. The timber14 must, as a matter of course, be drawn backward on the shooting-boardbefore the tusk-end of the dog can properly rise above the plane of theshooting-board, the lower edgeof the dog riding along the rear upperedge of the slot 4 in the rising stop position.

The presence and provision of the automatioally moving dog enables theoperator to stand in one position to the rear of the saw for feeding thestuff up to its cutting edge and moving the shooting-board to and froalong the table. It is thus not necessary for said operator to goforward to place the dog in stop or detent position for a forward strokeof the shooting-board, or to go to the fore end of the shooting-board torelease the dog when the stuff 14 is to be handled for another cut orripping thereof. The metal boxing for the dog is very simple and easilyapplied and protects the fore inner corner of the shooting-board againstwear and tear.

We claim 1'. In a rip-sawing machine, a table, a saw, a shootingboard, agravitating dog mounted in the fore end of said shooting-board and alongitudinal slot in the table, said dog being held up by contact withthe table and adapt ed to drop into said slot at the fore end of thestroke of the shooting-board to automatically release the stuff ortimber acted upon by the saw.

2. In a rip-sawin machine, a table having a race-way and a ongitudinalslot in said race-way, a circular saw suitably journaled in the table insuitable relation to said raceway, a shooting-board on said race-way andhaving a shoulder or recess at its fore inner corner, a metal box orcasing having an open bottom and secured in said recess at the fore endof the shooting-board and a gravitating dog mounted in said boX orcasing with its claw or tusk disposed upwardly and adapted to verticallyengage the slot in the table.

GEORGE J. SCHALLER. VICTOR B. ADAMS. Witnesses:

JOHN ELIAs JoNEs, NORMA KEISER.

